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<?php class X { static function foo() { self::goo(); } function goo() { } } (new x)->foo();
Output for 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Fatal error: Uncaught Error: Non-static method X::goo() cannot be called statically in /in/C8gAO:5 Stack trace: #0 /in/C8gAO(11): X::foo() #1 {main} thrown in /in/C8gAO on line 5
Process exited with code 255.

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